17 Works

Nitrogen availability and plant functional composition modify biodiversity-multifunctionality relationships

Eric Allan, Noémie Pichon, Seraina Cappelli, Santiago Soliveres, Tosca Mannall, Thu Zar Nwe, Norbert Hölzel, Valentin Klaus, Till Kleinebecker & Hugo Vincent
The ability of an ecosystem to deliver multiple functions at high levels (multifunctionality) typically increases with biodiversity but there is substantial variation in the strength and direction of biodiversity effects, suggesting context-dependency. A better understanding of the drivers of this context dependency is essential to predict effects of global change on ecosystems. To determine how different factors modulate the effect of diversity on multifunctionality, we established a large grassland experiment with 216 communities, crossing a...

Knowledge of returning wildlife species and willingness to participate in citizen science projects among wildlife park visitors in Germany

Emu-Felicitas Ostermann-Miyashita, Emu-Felicitas Ostermann-Miyashita, Hannes König, Nadja Pernat, Sonoko Dorothea Bellingrath-Kimura, Sophia Hibler & Christian Kiffner
Successful conservation efforts have led to recent increases of large mammals such as European bison (Bison bonasus), moose (Alces alces) and grey wolf (Canis lupus) and their return to former habitats in central Europe. While embraced by some, the recovery of these species is a controversial topic and holds potential for human-wildlife conflicts. Involving the public has been suggested to be an effective method for monitoring wildlife and mitigating associated conflicts. To assess two interrelated...

Data from: Genetic and genomic architecture of species-specific cuticular hydrocarbon variation in parasitoid wasps

Jan Buellesbach
Cuticular hydrocarbons (CHCs) serve two fundamental functions in insects: protection against desiccation and chemical signaling. How the interaction of genes shapes CHC profiles, which are essential for insect survival, adaptation, and reproductive success, is still poorly understood. Here we investigate the genetic and genomic basis of CHC biosynthesis and variation in parasitoid wasps of the genus Nasonia. We mapped 91 quantitative trait loci (QTL) explaining variation of a total of 43 CHCs in F2 hybrid...

Data from: Metabarcoding of trap nests reveals differential impact of urbanization on cavity-nesting bee and wasp communities

Ellen Dürrbaum, Felix Fornoff, Christoph Scherber, Eero Vesterinen & Bernhard Eitzinger
Urbanization is affecting arthropod communities worldwide, for example by changing the availability of food resources. However, the strength and direction of a community’s response are species-specific and depend on the species’ trophic level. Here, we investigated interacting species at different trophic levels in nests of cavity-nesting bees and wasps along two urbanization gradients in four German cities using trap nests. We analyzed bee and wasp diversity and their trophic interaction partners by metabarcoding the DNA...

Reproductive ecology of Drosophila obscura: A cold adapted species

Berta Canal, Aileen Seipelt & Claudia Fricke
The study of insect reproductive ecology is essential to determine species distributions and fate under changing environments. Species adapted to harsh environments are good examples to investigate the reproductive mechanisms that allow them to cope with the challenging conditions. We here focus on studying for the first time the reproductive ecology of a cold-adapted D. obscura strain collected in Finland (subarctic climate region). We tested several reproductive traits such as fertility and fecundity to observe...

Interest in insect die-off and intention for action using Google trends

Esther Felgentreff, Sascha Buchholz & Tanja Straka
1. The publication of “More than 75 percent decline over 27 years in total flying insect biomass in protected areas” by Hallmann et al. in October 2017 gained vast media coverage in Germany. The insect crisis as conservation topic has received little attention among the public before, but since media influences people’s awareness, we investigated i) whether the study publication induced increased awareness among the German public for insect die-off, and ii) whether it contributed...

Additional file 1 of A correlation map of genome-wide DNA methylation patterns between paired human brain and buccal samples

Yasmine Sommerer, Olena Ohlei, Valerija Dobricic, Derek H. Oakley, Tanja Wesse, Sanaz Sedghpour Sabet, Ilja Demuth, Andre Franke, Bradley T. Hyman, Christina M. Lill & Lars Bertram
Additional file 1. Supplementary Tables.

The risk faced by the early bat: individual plasticity and mortality costs of the timing of spring departure after hibernation

Alexander Scheuerlein, Christine Reusch, Leo Grosche, Frauke Meier, Jutta Gampe, Melanie Dammhahn, Jaap Van Schaik & Gerald Kerth
Hibernation is a widespread adaptation in animals to seasonally changing environmental conditions. In the face of global anthropogenic change, information about plastic adjustments to environmental conditions and associated mortality costs are urgently needed to assess population persistence of hibernating species. Here, we used a five-year data set of 1,047 RFID-tagged individuals from two bat species, Myotis nattereri and Myotis daubentonii that were automatically recorded each time they entered or left a hibernaculum. Because the two...

Once an optimist, always an optimist? Studying cognitive judgment bias in mice

Marko Bračić, Lena Bohn, Viktoria Siewert, Vanessa Von Kortzfleisch, Holger Schielzeth, Sylvia Kaiser, Norbert Sachser & S. Helene Richter
This repository contains raw data and analysis code for the manuscript entitled "Once an Optimist, Always an Optimist? Studying Cognitive Judgment Bias in Mice" from Marko Bračić, Lena Bohn, Viktoria Siewert, Vanessa von Kortzfleisch, Holger Schielzeth, Sylvia Kaiser, Norbert Sachser, S. Helene Richter, accepted for publication in the journal Behavioral Ecology. The aim of the study was to investigate the causes and stability of cognitive judgment bias (aka "optimism"). Individuals differ in the way they...

Data from: Fallow deer foraging alone does not preserve the vegetation of traditionally sheep-grazed calcareous grasslands

Denise Rupprecht, Birgit Jedrzejek & Norbert Hölzel
The goal of this study was to evaluate to what extent wild ungulates (fallow deer) can contribute to the maintenance of semi-natural calcareous grasslands, which are a threatened habitat type (natura 2000 code *6210). In a ten-year exclosure experiment we tested the effects of ungulate foraging using three treatments: (A) control with combined foraging of herded sheep and wild fallow deer, (B) sheep exclosure with only deer foraging and (C) total exclosure with no foraging....

Data from: Neglected very long-chain hydrocarbons and the incorporation of body surface area metrics reveal novel perspectives for cuticular profile analysis in insects

Jan Buellesbach, Marek Golian, Tanja Bien, Sebastian Schmelzle, Margy Alejandra Esparza-Mora, Dino McMahon & Klaus Dreisewerd
Most of our knowledge on insect cuticular hydrocarbons (CHCs) stems from analytical techniques based on gas-chromatography coupled with mass spectrometry (GC-MS). However, this method has its limits under standard conditions, particularly in detecting compounds beyond a chain length of around C40. Here, we compare the CHC chain length range detectable by GC-MS with the range assessed by silver-assisted laser desorption/ionization mass spectrometry (Ag-LDI-MS), a novel and rarely applied technique on insect CHCs, in seven species...

Recovery from heat-induced infertility: A study of reproductive tissue responses and fitness consequences in male Drosophila melanogaster

Berta Canal & Claudia Fricke
The predicted temperature increase caused by climate change is a threat to biodiversity. Across animal taxa, male reproduction is often sensitive to elevated temperatures leading to fertility loss and in more adverse scenarios, this can result in sterility when males reach their upper thermal fertility limit. Here we investigate temperature-induced changes in reproductive tissues, fertility reduction, sterility, and the associated fitness loss during the subsequent recovery phase in male Drosophila melanogaster. We heat-stressed males during...

Is Poaceae pollen size a useful proxy in palaeoecological studies? New insights from a Poaceae pollen morphological study in the Amazon

Caixia Wei & Phillip E. Jardine
Aim: Grasslands occupy around 40% of the Earth’s land surface and can be regarded as the most common vegetation type in the world, with Poaceae being the most widespread angiosperm family of all. Poaceae pollen size has previously been suggested as a proxy to reconstruct the past vegetation and climates in the Amazon area, but it is still controversial if this variable indeed can be used in broader spatial and deep-time scales. Here we set...

Additional file 1 of A correlation map of genome-wide DNA methylation patterns between paired human brain and buccal samples

Yasmine Sommerer, Olena Ohlei, Valerija Dobricic, Derek H. Oakley, Tanja Wesse, Sanaz Sedghpour Sabet, Ilja Demuth, Andre Franke, Bradley T. Hyman, Christina M. Lill & Lars Bertram
Additional file 1. Supplementary Tables.

Data on range-wide breeding habitat use of the critically endangered Yellow-breasted Bunting Emberiza aureola after population collapse

Wieland Heim, Ilka Beermann, Alexander Thomas, Marc Bastardot, Nyambayar Batbayar, Batmunkh Davaasuren, Yury Gerasimov, Makoto Hasebe, Gleb Nakul, Jugdernamjil Nergui, Pavel Ktitorov & Olga Kulikova
The population of the Yellow-breasted Bunting Emberiza aureola, a formerly widely distributed and abundant songbird of northern Eurasia, suffered a catastrophic decline and a strong range contraction between 1980 and 2013. There is evidence that the decline was driven by illegal trapping during migration, but potential contributions of other factors to the decline, such as land-use change, have not yet been evaluated. Before effects of land-use change can be evaluated, a basic understanding of the...

Biotic filtering by species’ interactions constrains food-web variability across spatial and abiotic gradients

Barbara Bauer, Emilio Berti, Remo Ryser, Benoit Gauzens, Myriam Hirt, Benjamin Rosenbaum, Christoph Digel, David Ott, Stefan Scheu & Ulrich Brose
Despite intensive research on species dissimilarity patterns across communities (i.e. beta-diversity), we still know little about their implications for variation in food-web structures. Our analyses of 50 lake and 48 forest soil communities show that, while species dissimilarity depends on environmental and spatial gradients, these effects are only weakly propagated to the networks. Moreover, our results show that species and food-web dissimilarities are consistently correlated, but that much of the variation in food-web structure across...

Revisiting the number of self‐incompatibility alleles in finite populations: From old models to new results

Peter Czuppon & Sylvain Billiard
Under gametophytic self-incompatibility (GSI), plants are heterozygous at the self-incompatibility locus (S-locus) and can only be fertilized by pollen with a different allele at that locus. The last century has seen a heated debate about the correct way of modeling the allele diversity in a GSI population that was never formally resolved. Starting from an individual-based model, we derive the deterministic dynamics as proposed by Fisher (1958), and compute the stationary S-allele frequency distribution. We...

Registration Year

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Affiliations

  • University of Münster
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  • Charité - University Medicine Berlin
    2
  • Massachusetts General Hospital
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  • University of Lübeck
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  • University Hospital Schleswig-Holstein
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  • University of Oslo
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  • Harvard University
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  • Imperial College London
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  • Berlin Institute of Health at Charité - Universitätsmedizin Berlin
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  • National Institute on Aging
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